| "An Gorta Mór", in the Kilmoyly spa, Fenit areas | Dalton, Ciarán | Article in Book | Kerry Archaeological and Historical Society | 1997 |
| "Money from America" | Dowling, Eamonn | Article in Journal | | 2012 |
| "Pensioners, Barbers, Valets or Markees"? : Jonathan Swift and Huguenot Bank Investors in Ireland, 1721 | Costello, Vivien | Article in Journal | | 2008 |
| 'A planned announcement'? - Costello in Canada, September 1948 | Cunningham, Emma | Article in Journal | | 2002 |
| 'Behind closed doors': Society, Law and familial violence in Ireland, 1922-1990 | Earner-Byrne, Lindsey | Article in Book | | 2017 |
| 'Divorce Irish style': Marriage dissolution in Ireland, 1850-1950 | Urquart, Diane | Article in Book | | 2017 |
| 100 years in the short grass : Naas Golf Club, founded 1896 | | Monograph or Collective Volume | Naas Golf Club | 1996 |
| 19th century Irish explorers in the Levant | Costello, C. | Article in Journal | | 1974 |
| 60 years on: the "Southern Unionists", the Crown and the Irish Republic | Kenny, Mary | Article in Journal | | 2009 |
| A Bronze Age burial in a tumulus at Annaghkeen, Headford, Co. Galway | Costello, T. B. | Article in Journal | | 1922 |
| A class apart : the gentry families of County Kildare | Costello, Con | Monograph or Collective Volume | Nonsuch Publishing | 2005 |
| A constitutional antiquity? - Habeas Corpus (Ireland) Act 1782 revisited | Costello, Kevin | Article in Journal | | 1988 |
| A Galway man meets John Brown before he was 'Mouldering in the grave' | O'Loughlin, Thomas | Article in Book | | 2015 |
| A Kerry 'moonlighter' | Costello, Con | Article in Journal | | 1981 |
| A legacy in stone and rhyme : the Costello family and the Knights of Glin | Donovan, Tom | Article in Book | | 2009 |
| A Londonderry Huguenot family - Lavie | Costello, Vivien | Article in Book | | 2013 |
| A mass of crumbling ruins : the destruction of the Four Courts in June 1922 | Keane, Ronan | Article in Book | | 1996 |
| A most delightful station : the British Army on the Curragh of Kildare, Ireland, 1855-1922 | Costello, Con | Monograph or Collective Volume | Collins Press | 1996 |
| A note on Jean Arnaud | Costello, Vivien | Article in Journal | | 2006 |
| A talk to NCOs | Costello, M. J. | Article in Journal | | 2011 |
| Adultery in the courts: Damages for Criminal Conversation in Ireland | Howlin, Niamh | Article in Book | | 2017 |
| Adventures in training : the Irish genesis of the 'remarkable and far-sighted' Select Committee on Legal Education, 1846 | Kenny, Colum | Article in Book | | 2005 |
| Adventures in training : the Irish genesis of the remarkable and far-sighted select committee on legal education, 1846 | Kenny, Colum | Article in Book | | 2003 |
| America and Irish unionism, 1870-1930 | Flewelling, Lindsey | Article in Book | | 2024 |
| America and Irish-American nationalism | Brundage, David | Article in Book | | 2024 |
| American Catholicism and the Irish from colonial times to 1870 | Rafferty, Oliver P. | Article in Book | | 2024 |
| An 18th century episcopal instruction for Ossory | Costello, Con | Article in Journal | | 1983 |
| An enforced weekend cruise | Costello, Michael | Article in Journal | | 1986 |
| An introduction to the Royal Hospital, Kilmainham : its architecture, history and restoration | Beaumont, PiarasCostello, JohnMurray, Pádraig | Monograph or Collective Volume | The authors | 1987 |
| An investigation into the Connacht ancestry of Mary Ann Costello, mother of George Canning | De Breffny, Brian | Article in Journal | | 1980 |
| An Irish hero of France : a Corkman turns the tide at Landen | Costello, M. J. | Article in Journal | | 1945 |
| An tEasbog Tomás Ó Coisdealbha, 1786-1831 | Mac Fhinn, Pádraig Eric, 1895-1987 | Article in Journal | | 1945 |
| Anti-Irish nativism in the mid-nineteenth century | Hirota, Hidetaka | Article in Book | NA | 2024 |
| Archives of the Irish Dominican College, San Clemente, Rome : a summary report. Compiled in October 1952 | Kearns, Conleth | Article in Journal | | 1955 |
| Asiatic Cholera and staggering - Bob : the Cholera epidemic of 1832-33 in Kerry | Fitzsimons, BobFitzsimons, Tom | Article in Book | | 1997 |
| Baiting the bull | Costello, Con | Article in Journal | | 1975 |
| Blossom Gate: a late medieval gatehouse | Costello, Eugene | Article in Journal | | 2011 |
| Botany Bay : the story of the convicts transported from Ireland to Australia, 1791-1853 | Costello, Con | Monograph or Collective Volume | | 1987 |
| Botany Bay : the story of the convicts transported from Ireland to Australia, 1791-1853 | Costello, Con | Monograph or Collective Volume | Mercier Press | 1996 |
| Botany Bay : the story of the convicts transported from Ireland to Australia, 1791-1853 | Costello, Con | Monograph or Collective Volume | | 1987 |
| Breaking the silence of child sexual abuse in the Irish-American Catholic Church | Ebest, Sally Barr | Article in Book | | 2024 |
| California, race, and the Irish in the west | Campbell, Malcolm | Article in Book | | 2024 |
| Canon Gerard Wall | Costello, Hanna | Article in Journal | | 2003 |
| Capturing fading communities in post-World War II Irish-American fiction | Anish, Beth O'Leary | Article in Book | NA | 2024 |
| Class, criminality and marriage breakdown in post-Independence Ireland | McGowan, Deirdre | Article in Book | | 2017 |
| Clongowes Wood : a history of Clongowes Wood College 1814-1989 | Costello, Peter | Monograph or Collective Volume | Gill & Macmillan | 1989 |
| Conversion and family identity in eighteenth-century Europe : the Dillons of Costello-Gallen | Ó Conaill, Colm James | Article in Book | | 2005 |
| Cooley, Gandon and the Four Courts | Curran, P. | Article in Book | | 1996 |
| Cosmopolitan insights from early Irish-American letter networks | Orr, Jennifer | Article in Book | | 2024 |
| Costello memorial chapel | McCabe, E. | Article in Journal | | 1998 |
| Courtroom dialogues and feminist legal theory in Irish literature | Costello, Róisin A. | Article in Journal | | 2020 |
| Courtroom dialogues and feminist legal theory in Irish literature | Costello, Róisin A. | Article in Journal | | 2019 |
| De annatis Hiberniae : a calendar of the first fruits' fees levied on papal appointments to benefices in Ireland, A.D. 1400 to 1535, extracted from the Vatican and other Roman archives... vol. 1 Ulster | | Monograph or Collective Volume | | 1909 |
| Declaring the Irish republic : another view | Stanford, W. B. | Article in Book | | 1982 |
| Denis Guiney | Costello, Peter | Monograph or Collective Volume | University Colege Dublin Press, on behalf of the Historical Association of Ireland | 2008 |
| Dingle, Corca Dhuibne, and the great famine | Granham, Dan | Article in Book | | 1997 |
| Disability in Irish-Catholic America | Valente, Joseph | Article in Book | | 2024 |
| Drama in Cloughjordan | Costello, Seamus | Article in Journal | | 2001 |
| Dublin Castle in the life of the Irish nation | Costello, Peter | Monograph or Collective Volume | Wolfhound | 2000 |
| Dublin churches | Costello, Peter | Monograph or Collective Volume | Gill & Macmillan | 1989 |
| Dunshaughlin through the years | Donohoe, JohnEnglishby, Thomas | Monograph or Collective Volume | Costello | 1996 |
| Dutch influences in seventeenth-century Ireland : the duck decoy | Costello, Vandra | Article in Journal | | 2002 |
| Easter fatalities 1916 - Kingstown and surrounding areas | Smith, Brian | Article in Journal | | 2016 |
| Embedding the Family in the Irish Constitution | Mohr, Thomas | Article in Book | | 2017 |
| Enduring the most : the life and death of Terence MacSwiney | Costello, Francis J. | Monograph or Collective Volume | Brandon | 1995 |
| Exhibition of Silver | Costello, Con | Article in Journal | | 1996 |
| Faith or fatherhood? Bishop Dunboyne's dilemma : the story of John Butler, Catholic bishop of Cork 1763-1787 | Costello, Con | Monograph or Collective Volume | Woodfield Press | 2000 |
| Family and labor in eighteenth-century Irish America | Ridner, Judith | Article in Book | | 2024 |
| Feirmeoirí faoi Cheilt: Dul Chun Cinn agus Dúshláin sa Taighde faoi Ghnás an Buailteachais | Costello, Eugene | Article in Journal | | 2016 |
| Figures in the hall | Curran, C. P. | Article in Book | | 1996 |
| Folklore in Irish America | Quinn, E. Moore ; Delay, Cara | Article in Book | | 2024 |
| Four eighteenth-century drawings of County Kildare | Costello, Con | Article in Journal | | 1992 |
| Ganntanas bhia i gCiarraí roimh an ghorta mhóir | Ó Concubhair, Pádraig | Article in Book | | 1997 |
| General Michael Joseph Costello (1904-1986) | Anonymous | Monograph or Collective Volume | Comhlucht Siuicre Eireann Teo | 1986 |
| General Philip Sheridan | Costello, M. J. | Article in Journal | | 1964 |
| Glorious Punchestown : 150 years old | Costello, Con | Article in Journal | | 2000 |
| Gothic features in eighteenth-century Irish landscapes | Costello, Vandra | Article in Book | | 2022 |
| Governing together in good and bad economic times : the fulfilment of election pledges in Ireland | Costello, RoryThompson, Robert | Article in Journal | | 2016 |
| Guide to Co. Kildare and west Wicklow | Costello, Con | Monograph or Collective Volume | Leinster Leader | 1991 |
| Historic recruiting posters | Costello, C. | Article in Journal | | 1974 |
| How remembering the Famine shaped Irish-American identity | Kelly, Mary C. | Article in Book | | 2024 |
| Hugh Kennedy, the Childers habeas corpus application and the return to the Four Courts | Hogan, Gerard | Article in Book | | 1996 |
| Huguenot church registers in Ireland | Costello, Vivien | Article in Book | | 1992 |
| In quest of an heir : the life and times of John Butler, Catholic bishop of Cork, Protestant baron of Dunboyne | Costello, Con | Monograph or Collective Volume | | 1978 |
| In the line of duty : priests who ministered to the famine victims | O'Shea, Kieran | Article in Book | | 1997 |
| Interrogating the charge of Concealment of Birth in Nineteenth Century Irish courts | Farrell, Elaine | Article in Book | | 2017 |
| Ireland 1949-73 : a closet member of the Commonwealth? | Wynne, Ben | Article in Journal | | 2020 |
| Ireland and the crusades | Costello, Con | Article in Journal | | 1970 |
| Ireland and the Holy Land | Costello, C. | Monograph or Collective Volume | Goodliffe Neale | 1974 |
| Ireland and the Irish in the Atlantic world | Horning, Audrey | Article in Book | | 2024 |
| Irish America, the 'Celtic tiger' and after | Ó Riain, Seán ; Ní Chasaide, Nessa | Article in Book | | 2024 |
| Irish Americanness in late twentieth-century Hollywood films | Fee, Matthew J. | Article in Book | | 2024 |
| Irish Americans and US politics in the twenty-first century | Smyth, Ted | Article in Book | | 2024 |
| Irish Americans in American politics and the Catholic Church, 1870-1945 | Meagher, Thomas J. | Article in Book | | 2024 |
| Irish and European law | Costello, Cathryn | Article in Book | | 2004 |
| Irish demesne landscapes, 1660-1740 | Costello, Vandra | Monograph or Collective Volume | Four Courts | 2015 |
| Irish labor, liberty, and literature in the twentieth-century Atlantic world | McGarrity, Maria | Article in Book | NA | 2024 |
| Irish military surveys of the 17th century | Costello, C. | Article in Journal | | 1961 |
| Irish music in America | Ní Fhuartháin, Méabh | Article in Book | | 2024 |
| Irish-American drama in mid-nineteenth-century America | Trotter, Mary | Article in Book | | 2024 |
| Irish-American famine literature | Corporaal, Marguérite | Article in Book | | 2024 |
| Irish-American politics in the mid-twentieth century | O'Brien, Matthew J. | Article in Book | | 2024 |
| Irish-American women and political activism in the early twentieth century | McCarthy, Tara M. | Article in Book | | 2024 |
| Issue congruence between voters and parties : examining the democratic party mandate in Ireland | Costello, Rory | Article in Journal | | 2021 |
| James Joyce : the years of growth, 1882-1915 : a biography | Costello, Peter | Monograph or Collective Volume | Kyle Cathie | 1992 |
| John A. Costello, 1891-1976 : compromise Taoiseach | Jordan, Anthony J. | Monograph or Collective Volume | Westport Books | 2007 |
| John A. Costello, 1948-51, 1954-7 | Lysaght, Charles | Article in Book | NA | 2025 |
| John Costello 'announces' the repeal of the External Relations Act | McCabe, Ian | Article in Journal | | 1992 |
| John MacHale, archbishop of Tuam | Costello, Nuala | Monograph or Collective Volume | Talbot Press | 1939 |
| John O'Donovan's Curragh | Costello, Con | Article in Book | | 2006 |
| John Stanislaus Joyce : the voluminous life and genius of James Joyce's father | Costello, PeterJackson, John Wyse | Monograph or Collective Volume | Fourth Estate | 1997 |
| Kildare : saints, soldiers and horses | Costello, Con | Monograph or Collective Volume | Leinster Leader | 1991 |
| Kildonnell - Grange | Costello, Mary | Article in Book | | 1999 |
| Kilkenny city and county : a photographic record | Costello, SeamusO'Dwyer, SeamusWhite, Kieran | Monograph or Collective Volume | College Books | 1995 |
| King George V's Speech at Stormont (1921) : Prelude to the Anglo-Irish Truce | Costello, Francis J. | Article in Journal | | 1987 |
| Labour, Irish republicanism and the social order during the Anglo-Irish war | Costello, Francis J. | Article in Journal | | 1991 |
| Ladytown watch house | Costello, Con | Article in Journal | | 1972 |
| Land and Liam O'Flaherty | Costello, Peter | Article in Book | | 2000 |
| Law and the Family in Ireland, 1800-1950 | | Monograph or Collective Volume | Palgrave | 2017 |
| Lawyers or politicians? the Irish judges and the right to vote, 1832-1850 | Greer, Desmond | Article in Book | | 1996 |
| Leaving the Commonwealth | McCabe, Ian | Article in Journal | | 1998 |
| Lena Boylan : obituary | Costello, Con | Article in Journal | | 2001 |
| LGBTQ Irish activists and the queering of Irish America | Keown, Bridget E. | Article in Book | | 2024 |
| Liam O'Flaherty's Ireland | Costello, Peter | Monograph or Collective Volume | Wolfhound Press | 1996 |
| Limerick workhouse, June, 1846 to December, 1847 | Costello, David | Article in Journal | | 1996 |
| Lines of defence in Ulster, 1803 | | Article in Journal | | 1954 |
| Listowel district fever hospital (1839-78) | O'Shea, Kieran | Article in Book | | 1997 |
| Lloyd George and Ireland, 1919-21 : an uncertain policy | Costello, Francis J. | Article in Journal | | 1988 |
| Looking back | Costello, Hanna | Article in Journal | | 2000 |
| Looking back : aspects of history, Co. Kildare | Costello, Con | Monograph or Collective Volume | Leinster Leader | 1988 |
| Lordship and landownership in two Mayo baronies, 1550 - 1630 | Cunningham, Bernadette | Article in Journal | | 1997 |
| Lorraine Hansberry, Sean O'Casey, and the common space of the theater | McClintock-Walsh, Cara | Article in Book | | 2024 |
| Lt. Col. Con Costello K.M., PhD | Connolly, ElizabethMcDowell, Harry | Article in Journal | | 2006 |
| Mannin Castle, in the Parish of Aghamore, Barony of Costello, and County of Mayo | Knox, H. T. (Hubert Thomas) | Article in Journal | | 1911 |
| Marriage breakdown in Ireland, c. 1660-1857 | O'Dowd, Mary | Article in Book | | 2017 |
| Married women's property in Ireland 1800-1900 | Costello, Kevin | Article in Book | | 2017 |
| Matthew Trant Moriarty and the famine in Ventry | Lehane, Shane | Article in Book | | 1997 |
| Media and the Irish diaspora from the twentieth century to the present | O'Brien, Mark | Article in Book | | 2024 |
| Medieval memories and the reformation of religious identity : Catholic and Anglican interactions with parish church sites in County Limerick, Ireland | Costello, Eugene | Article in Journal | | 2017 |
| Memories of Sheares Street | Costello, Hanna | Article in Journal | | 2007 |
| Michael Collins in his own words | | Monograph or Collective Volume | Gill & Macmillan | 1997 |
| Mount Ievers Court, Sixmilebridge, Co. Clare | Costello, Gerard G. | Article in Journal | | 2016 |
| Mount Ievers Court, Sixmilebridge, Co. Clare | Costello, Gerard G. | Article in Journal | | 2016 |
| Murder in the Irish family, 1930-1950 | Brennan, Karen | Article in Book | | 2017 |
| Nineteenth century Irish explorers in the Levant | Costello, C. | Article in Journal | | 1974 |
| Notes on conversations | Mansergh, Nicholas, 1910-1991 | Article in Book | | 1997 |
| Notes on the history of Millstreet | Costello, MichaelÓ Maidín, Pádraig | Monograph or Collective Volume | Aubane Historical Society | 2001 |
| Novel traditions : realism and modernity in 'Hurrish' and 'The real Charlotte' | Costello-Sullivan, Kathleen | Article in Book | | 2005 |
| Obituaries. John Meehan (1936-2020) | Costello, FergalTansey, Carmel | Article in Journal | | 2023 |
| Obituaries. Michael P.L. Costelloe | D., O.D. A.M. | Article in Journal | | 2012 |
| Obligationes pro annatis diocesis Cassellensis, [1433-1534] | | Article in Journal | | 1966 |
| Obligationes pro annatis diocesis Cloynensis, [1413-1526] | | Article in Journal | | 1961 |
| Obligationes pro annatis diocesis Corcagiensis | | Article in Journal | | 1970 |
| Obligationes pro annatis diocesis Imelacesis, [1429-1532] | Costello, M. A.Ryan, L.Skehan, W. | Article in Journal | | 1966 |
| Obligationes pro annatis diocesis Ossoriensis, 1413-1531 | | Article in Journal | | 1957 |
| Obligationes pro annatis diocesis Rossensis. [1432-1533] | | Article in Journal | | 1970 |
| Obligationes pro annatis provinciae Tuamensis (1413-1548) from a transcript by M.A. Costello | | Article in Journal | | 1963 |
| Old Ironsides | Costelloe, JeanStewart, Colin | Monograph or Collective Volume | Cornerstone | 2001 |
| On holy ground : the benchers and the site of the present Four Courts before 1796 | Kenny, Colum | Article in Book | | 1996 |
| Party identification in the wake of the crisis: a nascent realignment? | Costello, Rory | Article in Book | | 2018 |
| Patrick Kavanagh and the Leader : the poet, the politician and the libel trial | Walsh, Pat, 1961- | Monograph or Collective Volume | Mercier | 2010 |
| Pompey's pillar in Wexford | Costello, Con | Article in Journal | | 1976 |
| Portmarnock and the Plunketts, 1850-1918 : the Portmarnock Brick and Terracotta Works | Costello, Alan | Monograph or Collective Volume | Four Courts | 2013 |
| Post Gandon at the Four Courts | Griffin, Conor | Article in Book | | 1996 |
| Post-medieval upland settlement and the decline of transhumance : a case-study from the Galtee Mountains, Ireland | Costello, Eugene | Article in Journal | | 2015 |
| Practical science and religious politics : the Glasnevin botanic gardens' Sunday opening controversy, 1861 | Costello, Vandra | Article in Book | | 2011 |
| Printed Irish Huguenot ancestral research sources : Information booklet | Costello, Vivien | Monograph or Collective Volume | Irish Section of the Huguenot Society of Great Britain and Ireland | 1987 |
| Prohibitation and the unsinkable Molly Brown | Costello, Tom | Article in Journal | | 2001 |
| Public space for display and promenade in Georgian Dublin | Costello, Vandra | Article in Book | | 2008 |
| Public spaces for recreation in Dublin 1660-1760 | Costello, Vandra | Article in Journal | | 2007 |
| R. (Martin) v Mahony : the History of a Classical Certiorari Authority | Costello, Kevin | Article in Journal | | 2006 |
| Race, gender, and Irish labor in US northeastern cities | Phillips-Cunningham, Danielle | Article in Book | | 2024 |
| Race, labor, and slavery in Antebellum Irish America | Murphy, Angela F. | Article in Book | | 2024 |
| Recent advancements in the study of past transhumance practices in Ireland | Costello, Eugene | Article in Journal | | 2017 |
| Researching Huguenot settlers in Ireland | Costello, Vivien | Monograph or Collective Volume | [Vivien Costello] | 2007 |
| Revisiting the role of the United States of America in Northern Ireland | Sanders, Andrew | Article in Book | | 2024 |
| Roscommon Drama Festival - From 1960 to Present | Costello, TomNally, Joe | Article in Journal | | 2019 |
| Sean–nós in Oireachtas na Gaeilge 1903–1924: idé–eolaíocht ghluaiseacht na Gaeilge ag tús an fichiú haois trí lionsa na fonnadóireachta | Costello, Éamonn | Article in Book | | 2022 |
| Seasonal settlement and the interpretation of upland archaeology in the Galtee Mountains, Ireland | Costello, Eugene | Article in Journal | | 2016 |
| Seasonal settlement and the interpretation of upland archaeology in the Galtee Mountains, Ireland | Costello, Eugene | Article in Journal | | 2016 |
| Shooting the messenger : Col. Costello and the Murray case | Bourke, Marcus | Article in Journal | | 1997 |
| Sir William Petty and the Court of Admiralty in Restoration Ireland | Costello, Kevin | Article in Book | | 2005 |
| Sir William Petty and the court of admiralty in restoration Ireland | Costello, Kevin | Article in Book | | 2003 |
| Solicitors and the Four Courts | Hogan, Daire | Article in Book | | 1996 |
| Some old Galway domestic utensils | Costello, T. B. | Article in Journal | | 1905 |
| Some spoonfuls of medicine | Costello, R. | Article in Journal | | 2001 |
| Some west coast aids to navigation : Clare Island, Killala and Slyne Head | Costelloe, M. P. L. | Article in Journal | | 1992 |
| South of the border | Costello, MichaelMaguire, Seán | Article in Journal | | 1996 |
| Still looking back | Costello, Hanna | Article in Journal | | 2001 |
| Stillorgan Shopping Centre - an architect's perspective | O'Toole, Shane | Article in Journal | | 2006 |
| Stillorgan Shopping Centre: a personal memoir | Costello, John | Article in Journal | | 2010 |
| Stories from Gaelic Ireland : microhistories from the sixteenth-century Irish annals | Cunningham, BernadetteGillespie, Raymond | Monograph or Collective Volume | Four Courts | 2003 |
| Teampallín Bán, Listowel | O'Shea, Kieran | Article in Book | | 1997 |
| The action for Breach of Promise of Marriage in Nineteenth Century Ireland | Sinnott, Michael | Article in Book | | 2017 |
| The ancient law school of Park, Co. Galway | Costello, T. B. | Article in Journal | | 1940 |
| The art of Robert Costelloe | McCabe, Patricia | Monograph or Collective Volume | Patricia McCabe | 2018 |
| The barracks is excellent | Costello, Con | Article in Book | | 1996 |
| The British army on the Curragh of Kildare, 1855-1922: environmental, social and economic aspects of the making and occupation of the camp | Costello, Cornelius | Thesis | | 1994 |
| The comeback of the medieval marriage 'per verba de praesenti' in 19th century bigamy cases | Harding, Maebh | Article in Book | | 2017 |
| The convicts : transportation from Ireland | Costello, Con | Article in Book | | 1984 |
| The Court of Admiralty of Ireland, 1575-1893 | Costello, Kevin | Monograph or Collective Volume | Four Courts | 2011 |
| The credentials controversy : Australia, Ireland and the Commonwealth, 1950-65 | Kennedy, Michael (Michael J.)Lee, David | Article in Journal | | 2007 |
| The Curragh army camp : "a goodish place, sort of, in dry weather" | Costello, Con | Article in Journal | | 1998 |
| The Deer Island graves, Boston : the Irish famine and Irish-American tradition | Costello, Francis J. | Article in Book | | 1997 |
| The early history of James Gandon's Four Courts | McParland, Edward | Article in Book | | 1996 |
| The Emmets and the Jameses : an Irish-American case study | Tóibín, Colm | Article in Book | | 2024 |
| The famine in Kerry | | Monograph or Collective Volume | Kerry Archaeological and Historical Society | 1997 |
| The famine in Kerry from the report of the Poor Law Commissioners for 1847 | Ó Concubhair, Pádraig | Article in Book | | 1997 |
| The fate of the 'Illegitimate' child: An analysis of Irish Social Policy in the period: 1750-1952 | McCoughren, SimonePowell, Fred | Article in Book | | 2017 |
| The first coalition - 60 years on | Flynn, Kevin Haddick | Article in Journal | | 2008 |
| The Four Courts | Quinquagenarian, A. | Article in Book | | 1996 |
| The Four Courts : 200 years : essays to commemorate the bicentenary of the Four Courts | | Monograph or Collective Volume | Incorporated Council of Law Reporting for Ireland | 1996 |
| The Four Courts buildings and the development of an independent Bar of Ireland | Clancy, Tomás | Article in Book | | 1996 |
| The Georgian villa landscape of Cork | Costello, Vandra | Article in Journal | | 2019 |
| The Great Famine exodus | Shrout, Anelise Hanson | Article in Book | | 2024 |
| The great famine in Tralee | Healy, Shirley | Article in Book | | 1997 |
| The heart grown brutal : the Irish revolution in literature from Parnell to the death of Yeats, 1891-1939 | Costello, Peter | Monograph or Collective Volume | Gill & Macmillan | 1977 |
| The Hound’s Grave at Leganncorkee in the Parish of Ballynacourtee. Note on | Costello, T. B. | Article in Journal | | 1911 |
| The ideological space in Irish politics : comparing voters and parties | Costello, Rory | Article in Journal | | 2017 |
| The influence of Sir Walter Crofton's 'Irish system' on prison reform in Germany | Krause, Thomas | Article in Book | | 2005 |
| The influence of Sir Walter Crofton's 'Irish system' on prison reform in Germany | Krause, Thomas | Article in Book | | 2003 |
| The Irish and labor in the industrial era, 1880-1930s | Barrett, James R. | Article in Book | | 2024 |
| The Irish and the American military tradition | Costello, Michael | Article in Book | | 1980 |
| The Irish and the immigration and nationality act of 1965 | O'Hanlon, Ray | Article in Book | | 2038 |
| The Irish in the Civil War and reconstruction | Gleeson, David T. | Article in Book | | 2024 |
| The Irish in the revolutionary Atlantic | Fisher, Samuel K. | Article in Book | | 2024 |
| The Irish language in America | Wolf, Nicholas M. | Article in Book | | 2024 |
| The Irish legal system, 1796-1877 | Osborough, W. N. (William Nial) | Article in Book | | 1996 |
| The Irish representatives to the London Anglo-Irish conference in 1921 : violators of their authority or victims of contradictory instructions? | Costello, Francis J. | Article in Journal | | 1989 |
| The Irish revolution and its aftermath, 1916-1923 : years of revolt | Costello, Francis J. | Monograph or Collective Volume | Irish Academic Press | 2003 |
| The law of habeas corpus in Ireland : history, scope of review and practice under Article 40.4.2 of the Irish constitution. | Costello, Kevin | Monograph or Collective Volume | Four Courts | 2006 |
| The Nolans and Costellos of Listowel, Limerick and Calgary | De Bhaldraithe, PádraigDe Bhaldraithe, Pádraig Óg | Article in Journal | | 1990 |
| The nuns in Kerry : the unsung heroines of the famine | O'Shea, Kieran | Article in Book | | 1997 |
| The old Four Courts at Christ Church | McParland, Edward | Article in Book | | 1996 |
| The Prendergast famine letters | Prendergast, James | Article in Book | | 1997 |
| The priest and public affairs | Costello, Declan | Article in Journal | | 1969 |
| The reluctant taoiseach : a biography of John A. Costello | McCullagh, David | Monograph or Collective Volume | Gill & Macmillan | 2010 |
| The Republican courts and the decline of British rule in Ireland, 1919-1921 | Costello, Francis J. | Article in Journal | | 1990 |
| The rise of the popular press in Irish-American culture | van Tuyll, Debra Reddin | Article in Book | | 2024 |
| The role of propaganda in the Anglo-Irish war, 1919-1921 | Costello, Francis J. | Article in Journal | | 1989 |
| The round hall | Finlay, Thomas A. | Article in Book | | 1996 |
| The Routledge history of Irish America | | Monograph or Collective Volume | Routledge | 2024 |
| The seventeenth-century walled garden in Ireland | Costello, Vandra | Article in Book | | 2022 |
| The use and adaptation of the action of replevin in Ireland during the reign of Edward I | Brand, Paul | Article in Book | | 2003 |
| The very heart of the city : the story of Denis Guiney & Clerys | Costello, PeterFarmar, Tony | Monograph or Collective Volume | Clery and Co (1941) Ltd | 1992 |
| The woollen industry in county Cork 1891-1918 | Costello, GrettaHorgan, LisaO'Hea, Carol | Article in Journal | | 1989 |
| The workhouses of Kerry | Fitzmaurice, Tony | Article in Book | | 1997 |
| Thomas Burgh's Naas map-book | Costello, Con | Article in Journal | | 1987 |
| Thomas Costello and O'Rourke's wife | Carney, James Patrick, 1914-1989 | Article in Journal | | 1950 |
| Thomas Sherrard's map of Naas, 1787 | Costello, Con | Article in Journal | | 1998 |
| To the declaration of the Republic and the Ireland Act, 1945-9 | Whyte, J. H. | Article in Book | | 2003 |
| Trade tokens of Co. Galway in the 17th century | Costello, Thomas B. | Article in Journal | | 1931 |
| Trade tokens of the County of Galway in the seventeenth century : with introductory note | Costello, T. B. | Article in Journal | | 1911 |
| Tralee emigrant ships | O'Carroll, Helen | Article in Book | | 1997 |
| Transhumance and the making of Ireland's uplands, 1550-1900 | Costello, Eugene | Monograph or Collective Volume | Boydell Press | 2020 |
| Tuam by Thomas B. Costello, M.D., M.R.I.A. - Catholic Truth Conference Programme, 1936 | Costello, Thomas B. | Article in Journal | | 2014 |
| Tuam raths and souterrains | Costello, T. B. | Article in Journal | | 1902 |
| Tuam raths and souterrains | Costello, T. B. | Article in Journal | | 1903 |
| Turloch Luineach O'Neill : an Ulster problem | Costello, Joseph | Thesis | | 1973 |
| Two diaries of the French expedition, 1798 | | Article in Journal | | 1941 |
| Two priests of Naas | Costello, Con | Article in Journal | | 1987 |
| Ulster Presbyterians and the development of a 'Scotch-Irish' identity | Gilmore, Peter | Article in Book | | 2024 |
| Were the gardens at Kilruddery designed by a pupil of André Le Notre? | Costello, Vanda | Article in Journal | | 2010 |
| Whiteness and the contemporary Irish-American family saga | Moynihan, Sinéad | Article in Book | | 2024 |
| “Blurring the main story” : news in the work of Ciaran Carson | Costello O'Reilly, James | Article in Journal | | 2024 |